skin preview: consider devicePixelRatio when scaling #3941
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Holzhaus
changed the title
daschuer
reviewed
Jun 4, 2021
src/skin/skinloader.cpp
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| preview = preview.scaled(QSize(640, 360), Qt::KeepAspectRatio, Qt::SmoothTransformation); | ||
| QSize scaledSize(static_cast<int>(640 * devicePixelRatio), | ||
| static_cast<int>(360 * devicePixelRatio)); | ||
| preview.setDevicePixelRatio(devicePixelRatio); |
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nope. without line79 the image would just be as big as set by the QSize.
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whoops, you refer to the duplicate setDevicePixelRatio line above the code quote here.
yes, that's unnnecessary.
fixed.
daschuer
reviewed
Jun 4, 2021
src/skin/skinloader.cpp
Outdated
| QSize scaledSize(static_cast<int>(640 * devicePixelRatio), | ||
| static_cast<int>(360 * devicePixelRatio)); | ||
| preview.setDevicePixelRatio(devicePixelRatio); | ||
| preview = preview.scaled(scaledSize, Qt::KeepAspectRatio, Qt::SmoothTransformation); |
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This can be shortened to
Suggested change
| preview = preview.scaled(scaledSize, Qt::KeepAspectRatio, Qt::SmoothTransformation); | |
| preview = preview.scaled(QSize(640, 360) * devicePixelRatio, Qt::KeepAspectRatio, Qt::SmoothTransformation); |
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I didn't find docu on how to scale a QSize with just a factor. did you try it?
if yes, feel free to push the shorter version.
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I didn't find docu on how to scale a QSize with just a factor.
ywwg
approved these changes
Jun 4, 2021
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Thanks for the quick review. Ready! |
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follow-up for #3926
fixes blurry preview images.
before
this PR (not ethat you can now read the library : ) try with
QT_SCALE_FACTORS=3for full effect